I've a fresh install of Kubuntu 9.04. I use kubuntu almost on default settings (desktop effects activated) and sometimes the desktop becomes black (the LCD backlight switch off!!!) and I've to reset the pc.
I use a notebook, Toshiba M50-140 and I've attacched the lspci -vv.
I don't found anything interesting in the log, just too much lines at the end of Xorg.0.log.old (the old when pc freeze):
...............
(II) PS/2 Mouse: Found 3 mouse buttons
(II) PS/2 Mouse: Found x and y relative axes
(II) PS/2 Mouse: Configuring as mouse
(**) PS/2 Mouse: YAxisMapping: buttons 4 and 5
(**) PS/2 Mouse: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
(**) PS/2 Mouse: (accel) keeping acceleration scheme 1
(**) PS/2 Mouse: (accel) filter chain progression: 2.00
(**) PS/2 Mouse: (accel) filter stage 0: 20.00 ms
(**) PS/2 Mouse: (accel) set acceleration profile 0
(II) RADEON(0): Output: VGA-0, Detected Monitor Type: 0
(II) RADEON(0): Output: DVI-0, Detected Monitor Type: 0
Unhandled monitor type 0
(II) RADEON(0): Output: LVDS, Detected Monitor Type: 0
(II) RADEON(0): Added native panel mode: 1280x768
(II) RADEON(0): Output: S-video, Detected Monitor Type: 0
(II) RADEON(0): Output: VGA-0, Detected Monitor Type: 0
(II) RADEON(0): Output: DVI-0, Detected Monitor Type: 0
Unhandled monitor type 0
(II) RADEON(0): Output: LVDS, Detected Monitor Type: 0
(II) RADEON(0): Added native panel mode: 1280x768
(II) RADEON(0): Output: S-video, Detected Monitor Type: 0
(II) RADEON(0): Output: VGA-0, Detected Monitor Type: 0
(II) RADEON(0): Output: DVI-0, Detected Monitor Type: 0
Unhandled monitor type 0
(II) RADEON(0): Output: LVDS, Detected Monitor Type: 0
(II) RADEON(0): Added native panel mode: 1280x768
(II) RADEON(0): Output: S-video, Detected Monitor Type: 0
(II) RADEON(0): Output: VGA-0, Detected Monitor Type: 0
(II) RADEON(0): Output: DVI-0, Detected Monitor Type: 0
Unhandled monitor type 0
(II) RADEON(0): Output: LVDS, Detected Monitor Type: 0
(II) RADEON(0): Added native panel mode: 1280x768
(II) RADEON(0): Output: S-video, Detected Monitor Type: 0
[lspci]
00:00.0 Host bridge: Intel Corporation Mobile 915GM/PM/GMS/910GML Express Processor to DRAM Controller (rev 03)
Subsystem: Toshiba America Info Systems Device ff00
01:00.0 VGA compatible controller: ATI Technologies Inc M24 [Radeon Mobility X600]
Subsystem: Toshiba America Info Systems Device ff05
The same thing here on kubuntu 9.04 with desktop effects on (Radeon Mobility X1600).
Sometimes it hangs while loading kde, sometimes after 30 minutes, sometimes after 1 hour...
I had the screen going black and I also had the screen freezing without going black. PC locks completely, so it is not possible to switch to console. The only way out is hard reboot.
The system itself is working. I can ssh to it from another PC.
I am using opensource xserver- xorg-video- radeon since fglrx became unavailable for my card.